Carburetor



Sept 17 1929. P. GwlsDALLA 1,728,730

CARBURETOR Filed Nov. 12, 1925 INVENTOR.

Peter Gwsdalla;

Patented Sept.` 17, 1929 UNITED, STATES PATENT-- PETER GWISDALLA, OFyDETROIT,

MICHIGAN, ASSIGNOR-OF ONE-FOURTH TOAUGUST POLK AND DOMINIO S. POLK, BOTHAOIE RUTH, MICHIGAN, `ONE-LE'OURTH"TO JOSEPH FOI/PA, OF PARYSVILLE,MICHIGAN, yAND ONEFOURJIEHl TO` JOHN `B.

SOSNOWSKI, OF DETROIT, MICHIGAN CARBURETOR .'Appneauo'nfuea November1,2, i925. semi 68,521'.

' Will be simple in structure, economical of manufacture, and highlyefficient in use.

Another object of the invention is the provision in a carburetorfofmeans for simul taneously opening the air ports and the fuel portproportionately to each other.y y

Another object of the invention is the provision in a carburetor of avalve arrangement for controlling the admission of air and fuel to theinterior of the carburetor and so arranged through the use of springs asto cause an opening and closing of these control means upon the unequalpressure beng de veloped Within the carburetor and the air intake pipe.

Other objects will appear hereinafter.

The invention consists in the combination and arrangements of'partshereinafter described and claimed. p

rhe invention Will be best understood by a reference to the accompanyingdrawings t which form a part of this specification and in which,

Fig. 1 is a central vertical sectional vieW of the invention, and,

Fig. 2 is a section al view taken on substantially line 2--2 of Fig. 1.

rlhe invention in its preferred form comprises a shell 7 having a base 8threaded thereon by means of threaded flange 9. The base is providedwith a flange 10 which rests against the lower surface of the shell 7.An air intake pipe 11 communicates With the shell 7 and an outlet pipe12 also communieating with the shell 7 serves to deliver the mixture offuel and air to the manifold of the engine With which used. A butterfiyvalve 13 is provided in the air intake pipe 11 and a similar butterflyvalve 14 is provided in the outlet pipe 12 which carries an arm 15 foroperating the valve 14. Gonnected to the valve 13 is Lan arm 16 uponwhich is mounted al link17. A suitablerod 18 is connected to the link 17for operating the valve 13. Connected to this link' 17 is a rod 19 whichis also connected to an arm 20 fixedly attached to a bar 21 so that uponoperating the isy caused torock. f ku .r

A cap 22 is mounted on` the shell7 by means of suitable bolts ,23,suitable gaskets, f or packing, 24being interposed betweeny the shell 7andthe cap22. The ycapi 22 isprovided With an enlargement25 yso as toyafford a chamber-kin which is positioned a spring 26, one end of `whichis vattached tof an adjusting screw 27 The yother end of the spring26rests against a valvejhead 28 which is adapted to seat in a valve seatyformed in the upper lend of the' gland 29 which is threaded into thecap 255,..` This valve head 28 is'fixedly mounted to 4arod 30v Whichprojects throughy an opening formedin thegland 29 and is providedintermediate agende with f a nut 31 iiXedly' attached thereto.y`Agcylindrical valve, guide y32 is y,threaded into the shell 7 andprovided With a peripheral flange 35 Which servesas an abutment toprevent an undue threading of the chamber L32 into its position. y Thischamber`p32 is'provided at the upper' end yvvithaA series fof notches33, 33's. and 3'3". :Slidably mounted Vin, the member 32 in looserelationv to the rod 30 isa valve 34 adapted for a snug yfit to theinterior ofthemember 32 so as to prevent thepassage of air around thesides thereof.y Mounted on the rod 30, inan embracing reflation,intermediate the ymember 31y and they member 34, is a springBG.yScrewed to the lower end of the rod 30 is a nut fsupporting a suitableWasher engaged against'which is,

one end of ya spring 38, mounted in Aan vembracing relation on therod3Oand-having the other end infengagement With `the members-4' A yoke 39is fixedlymounted to the bar7 y21 bymeans of arms 40, Thisyoke 39 emonthe stem 42 for retaining the member 43 in position.

The construction is such that when the needle valve is opened to permitthe passage of fuel into the interior of the member 25, the valve 28will then prevent its passage into the interior proper of thecarburetor. As the engine withwhich the carburetor is'used is started,the suction Ycauses the member 34 to rise in the member 32' sufficientlyto clear the notches y33, thus providing a port through which the airmay enterV into the interiory of the carburetor. At the same time thevalve 28 is raised from its seatpermitting the fuel to enter theinterior of the carburetor and become mixed withthe air. The action ofthe springs serves to close these ports as soon as the suction of theengine is released.

In order to prime the engine, that is,`to permit fueltothe carburetorfor its delivery tothe engine without 'the mixture of any air, the valve13 is closed'by means of the rod 18. At the same time that this valve isclosed, the member 34 is raised upwardly and through the rod 30 thevalve 28 is moved from its seat.

.It is to'be noted that the link 17 is provided with sufficientclearance so that the valve 13 will notl be closed at eac-h movement ofthe valve 34 when the engine is in operation.

It is also apparent from the description and the drawing that thecarburetor is a float`- less carburetor so that the disadvantages anddifficulties result-ing from the operation of the carburetor lioat aredispensed with and a 0 more eflicient carburetor, on this account,provided. Ihe carburetor, because it is floatless, is particularlyadapted Vfor use with aeroplanes, in the operation of which the engineis sometimes vinverted and quite frequently inclined at a considerableangle to the horizontal. e.

While I have illustrated and described the preferred'form ofconstruction, I do not wish to limit myself to the precise details ofstructure set forth, but desire to avail myself of mounted on said stemin embracing relation, engaging at one end the opposite face of saiddisc; a washer mounted on said stem engaging the opposite end of saidlast mentioned spring; a spring mounted in said auxiliary chamberengaging said valve and normally thrusting the same to closed position;anda rockably mounted fork engaging said collar for moving said disc andsaid valve in unison with eachother, the engagement of said springs withsaid disc effecting the movement of said disc in either direction uponsufficient pressure exerted through said springs against said disc. Y

In testimony whereof, I have signed the foregoing specification.

PETER GIVISDALLA.

such lmodifications and variations as come y within the scope of' theappended claim.

Having thus described my invention what I claim as new and desire tosecure by .Letters Patent is: Y

A'carburetor comprising a shell'having a fuel inlet port; an yauxiliarychamber adapted for communication with said inlet port and with theinterior of said shell; a cylindrical member lixedly mounted in saidshell; a disc slidably mounted in said cylindrical member, the upperendfof said cylindrical member being provided with axially extendingnotches formed therein; a valve for lclosing communication ofsaidauxiliary chamber with said shell; a stem on said valve projectingthrough said disc; a collar vfixedly mounted on said stem, intermediateits ends a spring engaging at one end with one Yface of said disc, andatfthe other end with said collar; a spring llO iis

